| 摘要: |
| 涡轮泵是液体火箭发动机的故障高发部件之一,研究其实时振动监控算法及系统对提高发动机的可靠性与安全性具有非常重要的意义。在选择涡轮泵监控参数的基础上,深入研究涡轮泵实时故障检测算法,提出用于阈值更新的滑动样本递推方法,实现涡轮泵故障的自适应阈值检测,然后基于数字信号处理器设计涡轮泵新型实时振动监控系统,实现更高的处理速度,并满足小型化需求。 |
| 关键词: 涡轮泵 实时振动监控 自适应阈值 数字信号处理器 |
| DOI： |
| 分类号: |
| 基金项目:国家自然科学基金资助项目(50675219)；湖南省杰出青年科学基金资助项目(08JJ1008)。 |
|
| Real-time vibration monitoring algorithm and system design for high-speed turbopump |
|
XIA Lu-rui1,2, HU Niao-qing1, LI Jian-chuan1
|
|
1.Coll. of Mechatronics Engineering and Automation, National Univ. of Defense Technology, Changsha 410073, China;2.Dept. of Space Equipment, Inst. of Equipment Command and Technology, Beijing 101416, China
|
| Abstract: |
| Turbopump is one of key components in Liquid Rocket Engine (LRE), and its fault rate is relatively high. The research on real-time vibration monitoring algorithm and system for turbopump is vital to increase the reliability and safety of LRE. Firstly, the monitoring parameters for turbopump were selected and the real-time fault detection algorithm for turbopump was studied. The moving sample recursive method for self-refreshed threshold was presented to realize adaptive threshold detection of turbopump faults. Then, the new real-time vibration monitoring system, based on digital signal processor (DSP), was designed to realize higher computing speed. The new system could also satisfy the small-sized requirement. |
| Key words: Turbopump Real-time vibration monitoring Self-adaptive threshold Digital signal processor |
